[pfdietz]

The production of CO2 from making a wind turbine depends mostly on how much fossil fuel is used in the rest of the economy. This is not a constant but varies as the rest of the economy is decarbonized. The current numbers are from when we're still using a lot of fossil fuels there. In that situation, displacing fossil fuel usage as quickly as possible is more important than eliminating residual inherent CO2 emission (in wind's case, the CO2 from calcination of limestone in cement manufacture.) Wind turbines can be installed more quickly than nuclear plants, so they win this racing game.

(Solar doesn't really require any cement at all, so in the ultimate non-fossil economy it will beat even nuclear on inherent CO2 production.)